Rocker-cushion.



No. 674,500. Patented May. 2|, |90I. J. H. FINK. ROCKEIv CUSHION.

(Application filed J' une 3, 1899.)

- (No Manel.)

aan u @milk/moes I @Mo/a TI-frm@ W wmf.

s :as fo.. Pham-urna. wAsHms-mn D c UNITED STATES ATENT rines;

JOSEPH I-I. FINK, OF KANSAS CITY, MISSOURI.

HOOKER-CUSHION.

SPECIFICATION forming part of Letters Patent N o. 674,500, dated May 21, 1901.

Application led vJune 3, l 8 9 9 To all whom, t may concern:

Be it known that I, JOSEPH H. FINK, a citizen of the United States of America, residing -in Kansas City, in the county of Jackson and State of Missouri, have invented a new and useful Improvement in Rocker-Cushions, of which the following is a specification, reference being had therein to the accompanying drawings. y

My invention relates to improvements in rocker-cushions. It is adapted to be used in connection with chairs, cribs, rocking-horses, and similar articles which are provided with rockers.

My invention is of the class in which the under side of the rocker has secured to it an inflatable tube of resilient material.

The 1object of my invention is to provide the two inlatable tubes of a rocking-chair with means by which the tubes may be inflated and also retain an equal fluid-pressure in the two tubes at all times.

My invention also provides a construction in which the ends of the inflatable tubes are protected by the rocker, at the same time dispensing with the use of caps or other` coverings for the ends of the tubes.

In the accompanying drawings, which illustrate my invention', Figure I represents a perspective view of a rocking-chair provided with rocker-cushions of myinvention. Fig. I'I representsa vertical sectional view of the inflating-valve and connections. Fig. III represents an end View of the inflatable tube, with the rocker shown in cross-section. Fig. IV represents a longitudinal sectional view of one end of a rocker and tube. Fig. V represents a side elevation of a rocker and resilient cushion, a portion of the rocker being shown in vertical section. Fig. VI represents a view similar to Fig. IV, showing a modification of the securing device for th'e end of the inflatable tube.

Similar letters of reference indicate similar parts.

A indicates the rocker, which is provided in its under side with a longitudinal groove, which follows the curve of the rocker and near its ends is curved downwardly or reverse the curve followed by the central portion of the groove. The object of the reverse-curves in the groove will be explained hereinafter.

Serial No. 719,214. (No model.)

In each groove is placed an inflatable tube B, of soft rubber preferably. The ends of the tube B are solid and'iutegral with the body of the tube. The upper and lower sides of the solid ends of the tube B taper or converge toward the ends. By reason of this Jtapering the end exposed to injury is small and caps for its protection may be dispensed with. The reverse curve in the groove in lthe rocker is to permit a snug fit of the tapered end of the tube B. In order to secure the said solid ends of the tubes B closely to the under side of the rocker, a transverse screw C extends into the rocker A at each end of the tube B and into the solid end of the tube. In order to have the screw O have a secure hold of the rubber tube B, the tu be is preferably provided with a securing device D, embedded in the rubber and consisting of metal, wood, or other suitable substance. This securing device D may be provided with a threaded hole adapted to receive the threaded end of the screw, as shown in Fig. IV, or it may be used simply as a washer, as shown in Fig. VI. The tube B may be inflated in any desirable manner, as by a valve E, which maybe of the ordinary kind employed in connection with bicycletires.

In order to always have an equal fluidpressure in both the rockers, I connect the two by means of the tubes F, which are preferably located in longitudinal conduits provided in the forward chair-legs and extend therefrom to an in Hating-valve E, located between the chair-legs Gr and just below the seat of the chair. The other ends of the tubes F are interiorly connected with the tubes B. By introducing air into the valve F both tubes are inliated at the same time. lf one tube should leak a trifle, the air passing from the other tube would alwaysv preserve an equal pressure in both tubes. This is desirable, as both rocker-cushions yield alike under the weight lof a person when subjected to the same air-pressure, and the rocking motion is then even.

My invention is capable of many modifications without departing from its spirit.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

l. In rocker-cushions,the combination with IOO the rockers of a chair, crib or similar article, of inliatable tubes secured one to each rocker, two legs of the chair, one on each rocker, provided each with a longitudinal conduit communicating with the adjacent tube, and a tubular connection between the two conduits, substantially as described.

2. In rocker-cushions,the combination with the rockers of the kind described, of two legs, one on each rocker and each provided with a longitudinal conduit, inflatable tubes secured one to each rocker, a tubular connection between the tubes extending through the said conduits, and means by which the tubes may be inlated, substantially as described.

3. In rocker-cushions,the combination with rockers of the kind described, provided each on their under sides with a longitudinal groove, of the two legs, one on each rocker and provided each with a longitudinal conduit connecting with the groove in the adjaunder side of the tube, substantially as de scribed.

In testimony whereof I have hereunto affixed my signature in thepresen ce of two Witnesses.

JOSEPH H. FINK.

Witnesses:

WARREN D. HOUSE, D. W. C. HOUSE. 

